Deuterium

D2CAS 7782-39-04.03 g/mol

DD

Properties

Molecular formula
D2
Molar mass
4.03 g/mol
Exact mass
4.0282 Da
Density
0.2059 g/mL (at −269 °C)
Melting point
−254.43 °C
Boiling point
−249.49 °C
logP
0.25Crippen estimate
Polar surface area
0.0 Ų
H-bond donors / acceptors
0 / 0
Rotatable bonds
0

Hazards

Danger
Flammable (GHS02)Compressed Gas (GHS04)

Aggregated from 123 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Precautionary statements

P203, P210, P222, P280, P377, P381, P403, P410+P403

Identifiers

CAS number
7782-39-0
SMILES
[2H][2H]
InChIKey
UFHFLCQGNIYNRP-VVKOMZTBSA-N
InChI
InChI=1S/H2/h1H/i1+1D

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Names and synonyms

9 names
  • Diplogen
  • Hydrogen-2
  • Deuterium molecule
  • Hydrogen, isotope of mass 2
  • Hydrogen-d2
  • Deuterium (D2)
  • Dideuterium
  • Deuterium mol.
  • 2H

Work with Deuterium

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

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